EL552.256-Q2
4EL552.256-Q2 Operations Manual (OM410-00)

Avoiding Burn-In

As with other light emitting displays, displaying fixed patterns on the screen can
cause burn-in, where luminance variations can be noticed. Use a screen saver or
image inversion to avoid causing burn-in on the display.
Specifications
The EL panel is a matrix structure with column and row electrodes arranged in
an X-Y formation. Light is emitted when an AC voltage of sufficient amplitude
is applied at a row-column intersection. The display operation is based on the
symmetric, line-at-a-time data addressing scheme.
Performance characteristics are guaranteed when measured at 25 °C with rated
input voltage unless otherwise specified. Planar does not recommend operation of
the display outside these specifications.

Power-up Sequence

This display requires simultaneous 12V and 5V input in addition to video signals
for proper operation. It is important that your design provides these signals
simultaneously. If these signals are not simultaneous, they must meet the
sequential timing shown in Figure 1 below.
Figure 1. Power Supply and Logic Signal Sequencing
Note: To ensure the long-term reliability of the display, the proper power-
up sequence must be used and the minimum and maximum
specifications in this manual should be met without exception.
All internal high voltages are generated from the display supply voltage (VH). The
logic supply voltage (VL) should be present whenever video input signals or
V
H
12V
0V
V
L
5V
0V
0V
Logic
Signals
t1≥0
t2≥0
t1≥0
t2 ≥0